Supercharger Electromagnetic Clutch, Arrangement/Task/Design/Function

SuperchArger Electromagnetic Clutch, Arrangement/Task/Design/Function

ENGINE 111.943 /944 /973 /975

Note: Do not repair supercharger electromagnetic clutch.

Arrangement
At belt pulley of supercharger

Task
Switching compressor on and off silently
Absorbing rotary vibrations

Design



80 Magnetic coil holder
80/1 Magnetic coil
80/2 Wedge locking ring
80/3 Two-row grooved ball bearing
80/4 Belt pulley
80/5 Rotor (friction lining)
80/6 Riveted joint
80/7 Armature (friction lining)
80/8 M8 thread (for pressing off)
80/9 Plastic washer
80/10 Stroke
80/11 Circlip

Function
The electromagnetic clutch is activated by means of a GND signal supplied by the engine control module. The voltage is supplied either by the relay module or the fuse and relay module, respectively.
When current flows through the magnetic coil, the gap between armature and rotor is closed. Belt pulley and compressor are positively connected by means of friction surfaces.